Wrench.



PATENTED JAN. 9, 1906.

P. M. STRAUBE;

WRENCH.

APPLICATION FILED AUG.11,1905.

,4 TTOR/VEYS.

INVENTOI? WITNESSES.

TT'E STATES PATENT OFFICE.

FRANCIS M. STRAUBE, OF BOULDER, COLORADO, ASSIGNOR OF ONE-HALF TO LEWISW. GODDARD, OF BOULDER, COLORADO.

WRENCH.

Specification of Letters Patent.

Patented Jan. 9, 1906.

Application filed August 11, 1905- Serial No. 273,743.

To all whom, it may concern:

Be it known that I, FRANCIS MARION STRAUBE, residing at Boulder, in thecounty of Boulder and State of Colorado, haveinvented certain new anduseful Improvements in renches, of which the following is aspecification.

My invention relates to certain new and useful improvements in wrenches,and it relates more particularly to that type of wrenches known asmonkey-wrenches having sliding jaws.

The inventionprimarily has for its object to provide a wrench of thischaracter of a very simple and effective construction and in which meansare provided for permitting an easy, rapid, and accurate adjustmentofthe sliding jaw and in which means are provided to hold the jaw in afirm position afterit has been adjusted to the desired point.

Generically,my invention includes a wrench comprising a fixed jaw havinga handle portion provided with a rack and a movable jaw slidable on thehandle portion of the fixed jaw and a pivoted arm secured to the movablejaw, which is provided with a thread and a collar, which nut has ringportions for entering the rack of the fixed-jaw handle and means on themovable-jaw pivoted member for securing the same, with the collar. inengagement with the rack portions of the handle.

In its more detail nature my invention comprises certain novelconstruction, combination, and arrangement of parts, all of which willbe first described in detail and then specifically pointed out in theappended claims, reference being had to the accompanying drawings, inwhich Figure l is a perspective view of my invention, showing themovable jaw in position to be moved along thehandle portion. Fig. 2 is asimilar view showing the wrench as applied for use. Fig. 3 is a verticallongitudinal section of my invention. Fig. 4: is a horizontal section onthe line 4L 4 of Fig. 3. Fig. 5 is a similar view on the line 5 5 ofFig. 3. Fig. 6 is a cross-section on the line 6 6 of Fig.3. Fig. 7 is adetail perspective view of the pivoted arm and its jaw-engaging bearingmember. Fig.8 is a detail cross-sectional view showing a slightlymodified form of catch member. Fig. 9 is a similar view of a modifiedform of pivoted arm and its jaw and arm member separated.

Referring now to the accompanying drawings, in which like characters ofreference indicate like parts in all of the figures, 1 desig nates thefixed jaw, which has an integrallyformed handle 2 and a nut-engagingface 2, as shown. The handle 2 is provided on one edge face 2 with arack portion 2, as shown. Longitudinally slidable on the handle 2 is ajaw 3. which comprises the body portion 3 and the yoke or strap portion3 which surrounds or embraces the handle 2 and which, together with thebody portion 3, forms an elongated guideway for thehandle 2, as shown.The body portion 3 and the yoke or strap portion 3 may be made integral,if desired, or the same may be made in separate parts, as shown in. thedrawings, and secured together by rivets or otherwise. At the upperfront end the sliding jaw is cut away to form a recess 3 and to provideears 3 3, which ears 3 3 are apertured to receive the rivet 4, whichsecures the pivoted arm 5 to the jaw. The jaw 3 is formed with ashoulder 3 in the recess 3 to cooperate with a shoulder 5 on the head 5of the arm 5, which arm 5 comprises the head 5, having a portion toenter between the ears 3 3 of the jaw 3 and apertured, as at 5, topermit passage of the rivet 4:. The shoulder 5 of the head 5 is adaptedto abut the shoulder 3 of the jaw 3 when the parts are in the positionshown in Fig. 2.

The head 5 may be provided with a threaded portion 5 to receive thethreaded arm proper, 5 which arm 5 is screwed into the threaded portion5 and may be further secured thereto by a pin 5 in the aperture, ifdesired, as shown in Fig. 9, or the head 5 and arm 5 may be integral, asshown in Fig. 1.

The threaded arm 5 receives a collar 6, which is provided with aninternal annular aperture 6 to cooperate with the threaded arm 5 andwhich is provided with external annular rings 6 6 which enter the rackpor tion 2 of the handle 2 at times to hold the jaw 3 in place.

At its free end the arm 5 has a non-threaded portion 5 forming ashoulder with the reduced portion 5 of the arm 5.

7 designates a lock-pawl having an aperture 7 to fit on the extendingend 5 of the arm 5 where it is pivotally held by the ring 7, which ringin turn is held from coming off by upsetting the end of the portion 5",as at 5 as clearly shown in Fig. 9, or the pawl may be held in place bythe portion 5 as shown in Fig. 1. The pawl 7 is substantially U-shapedin longitudinal section to embrace the handle 2, and the said pawlterminates in the finger end 7', which looks over the edge 2" of thehandle 2 when the collar 6 has its rings 6 in engagement with the rackportion 2* of the handle 2, and the said pawl 7 thus locks the arm 5 inthe position shown in Fig. 2.

In Fig. 8 I have shown a slightly-modified form of pawl or latch member,by reference to which it will be seen that the pawl 7 in this form hasits finger end 7 slightly extended and provided with an undercut portion7, in which a locking-spring 7 is secured, and the said spring 7 ridesin a longitudinal groove 2 in the edge 2 of the handle 2 when the partsare in the position shown in Fig. 2, so

as to insure the pawl always remaining in its secured position when onceadjusted.

8 designates a stop portion on the handle 2 for limiting the movement ofthe slidingjaw 3.

So far as described the manner in which my invention operates will bebest explained as follows: The operator first moves the arm 5 to theposition shown in Fig. 1 to release the collar 6 from engagement withthe rack 2 and then moves the sliding jaw 00 against the nut until thespaces between the nut-engaging faces 2 and 3 of the jaws 2 and 3,respectively, are the proper distance apart. The operator then moves thearm 5 to the position shown in Fig. 2 and secures it in such position bythe pawl 7. Should the adjustment of the jaws be too loose, it is onlynecessary to turn the collar 6, when the jaws may be moved closertogether or farther apart, as desired.

I am aware that sliding-jaw wrenches have heretofore been provided inwhich a pivoted member carrying a worm-gear is secured to the slidingjaw for meshing with a rack portion of the handle; but my inventiondifferentiates from such construction in that the collar 6 is not aworm-gear and has no gear function whatever with the rack portion of thehandle, the collar and rack portion of the handle merely serving as alocking means to hold the jaw from longitudinal motion when once set andserving to adjust the jaw by turning the collar on the arm with which ithas a threaded engagement.

The handle 2 is recessed, as at 2', and provided with a spring 2 tocooperate with the arm 5 to hold the latch 7 tight.

From the foregoing description, taken in connection with theaccompanying drawings,

it is thoughtthe complete construction, operation, and many advantagesof my invention will be readily understood by those skilled in the artto which it appertains, and I desire to say that slight changes in thedetailed arrangement of parts may be made withoutdeparting from theinvention or the scope of the appended claims.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A wrench comprising the combination with a fixed jaw and a handlehaving a rackface, of a sliding jaw longitudinally movable on saidhandle, a threaded arm secured to said sliding jaw, aninternally-threaded collar on said threaded arm, said collar havingexternal rings for cooperating with the rack portion of the handle,means at the free end of the arm for lockingthe same with the handle anda spring device carried by the handle for engaging the free end of thearm to force it away from the handle, substantially as shown anddescribed.

2. A wrench of the character stated, comprising the combination with thefixed jaw and a handle having a rack portion, of a movable jawlongitndinally slidable on said handle, an arm pivotally secured to saidslidable jaw, said arm comprising a head portion and a threaded shank,an internally-threaded collar on said threaded shank, said collar havingexternal rings for cooperating with the rack portion of the handle, aU-shaped lockingpawl pivotally secured to the said threaded shank at itsfree end and adapted to lock over said handle and spring devices carriedby the handle for engaging the arm to force it away from the handle,substantially as shown and described.

3. A wrench of the character stated, comprising the combination with thefixed jaw and a handle having a rack portion, of a movable jawlongitudinally slidable on said handle, an arm pivotally secured to saidslidable jaw, said arm comprising a head portion and a threaded shank,an internally-threaded collar on said threaded shank, said collar havingexternal rings for cooperating with the rack portion of the handle, aU-shaped lockingpawl pivotally secured to the said threaded shank at itsfree end and adapted to lock over the'said handle, said portion having afinger.

end, and a locking-spring secured to said pawl in said finger end forlocking with said handle, substantially as shown and described.

4. A wrench of the class described, comprising the combination with afixed jaw and a handle integrally secured thereto, of a movable jawlongitudinally slidable on said handle, an arm pivotally secured to thesliding jaw, said arm and said sliding jaw having cooperating shoulders,a collar longitudinally adjustable on said arm, said collar havingexternal rings for cooperating with the rack portion of the handle, alocking-pawl pivotally secured to the free end of said arm for lockingwith said handle, and a spring device carried by the handle for engagingthe free end of the arm to force it away from the handle, substantiallyas shown and described.

5. A wrench comprising the combination with a fixed jaw and a handlehaving a rackface and a grooved portion, of a sliding jaw portion of thehandle and a spring in the IQ longitudinally movable on said handle, anda grooved portion of the handle for engaging threaded arm pivotallysecured to said sliding the free end of the arm to force it away fromjaw, an internally-threaded collar on said the handle substantially asshown and de- 5 threaded arm, said collar having external scribed.

rings for cooperating with the rack portions FRANCIS M. STRAUBE. of thehandle, means at the free end of the arm Witnesses: for locking the samewith the handle, said free J OHN A. HALL,

end of the arm adapted to rest in the grooved S. G. CAMPBELL.

